Friction draft-rigging.



J. F. oGoNNoR.

FRICTION DRAFT RIGGING.

- APPLICATION P'ILED PEB.1,191]Y.. 1,060, 1 14 Patented Apr. 29, 1913.

2 SHEETS-'SHEET l.

Jv. F. OUNNOR. FRIGTION DRAFT RGGING.

AP'VPLIGATION FILED 1213.1, 1911.

Patented Apr. 29, 1913.

2 SHEETSSEEBT 2.

w/mfssfs: 6MM @6M [NVE/WOR 'S ATTORNEYS of parts and devices herein shown and -"entran sacarse ramener JOHN F. OGONNOR, OF CHICAGO, ILLINOIS, ASSIGNOR T0 WILLIAJM H. MINER, OF CHICAGO, ILLINOIS.

rammen osare-eiserne.

LAIA.

To all whom it may concern.'

Be it known that I, JOHN F. OCoNNoR, a citizen of the United States, residing in Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement'. in Friction Draft-Rigging, of which the following is a specification.

My invention relates to improvements in friction draft rigging for railway cars.

The object of my invention is to provide an improved construction of friction draft rigging which will obviate or ve; greatly reduce thedanger of extreme y heavy shocks or blows causing shearing of the rivets which unite the stop members to the draft sills of the car after the friction cushioning mechanism has been fully compressed. This important object or result I practically accomplish by providingthe friction shell, and herein my invention primarily consists, with a series of transverse corrugations at ythe portion thereof which surrounds the spring at the rear of the friction shoes, thusr giving av certain degree of elasticity or yield to the friction shell itself, which I find by experiment operates to very eectually prevent shearing of the rivets connecting the stop members with the draft sills of the car under heavy shocks or. blows which would otherwise cause the shearing of the rivets, the friction shell .being of malleable iron and thus transversely corrugated has a certain extent of longtudinal compression, yield or elasticity under extremely heavy shocks or blows to an extent ordinarily of approximately a quarter of an inch without the metal receiving any permanent set, and thus acts to elfectually prevent shearing of the rivets which would otherwise occur if the shell Vwere absolutely stiff and rigid against longitudinal compression.

My invention further consists in the novel construction and novel combinatipn cescribed and more particularly specified in the claims.

In the accompanying drawing forming a part of this specification, Figure l is a plan View, partly in horizontal section of a friction draft rigging embodying my invention. Figa* 2 is a side elevation, partly in vertical, longitudinal section. Fig. 3 is a cross section Specication of Letters latent.

Patented Apr. 2.0i, IWB,

Application filed February 1, will. Serial No. 305,346.

on line 3-3 of Fig. l. Fig. 4 is a detail, longitudinal section of the friction shell and contained parts, showing the gear compressed solid. Fig. 5 is a cross` section on line 5-5 of Fig. 4. Figs. 6 and 7 are end elevations, lookingl from the lines 6-6, 7-7 of liig. 4f.

In the drawing, l represents the center or other draft sills of a railway car, 2 the stop members secured thereto by rivets 3 in the usual manner, the stop members having front and rear stops-4l, 5 and limiting stops 6, 7 for the followers 8, 9 to engage.

The numeral 10 denotes thedraw-bar, il the draft yoke, 12, 13 the springs, ifi a longitudinally movable friction shell, 15 friction shoes within the shell, preferably three in number, 16 the wedge, preferably three faced and 17 anti-friction rollers interposed between the inclined faces of the wedge and friction shoes.

To give the friction shell, which is of malleable iron, a certain degree of longitudinal yield or elasticity under extremely heavy blows and prevent it from acting as a rigid and unyielding stop against fur- .ther movement of the draw-bar by its engagement with the follower after the springs have been fully compressed and to prevent consequent danger of shearing the rivets 3 I provide the friction shell at the portion thereof surrounding the springs to the rear of the friction shoes with a plurality of transverse circumferential corrugations 1 8. This gives the friction shell a certain degree of longitudinal yield or elasticity, suficient to practically protect the rivets from danger of shearing under eX tremely heavy blows to which the draftI rigging is sometimes use.

At its rear end, the friction shell is formed with an inturned flange or rim 19 which is furnished with an inner set of bevel faces 20 and an outer set of bevel faces 21, the inner and outer sets of bevel faces alternating with each other. The outer set of, bevel faces' 2l are engaged by the corresponding bevel faces Q2 on the arms 23 of the outer cap 2d, and the inner set of bevel faces 20 are engaged by corresponding bevel faces 25 on the radial arms or lugs 26 of the inner cap 27. The inner ca 27 is thus prevented from moving longisubjected in practical tudinally outward through the open end of the friction shell, while the outer ca 24 is prevented from moving. longitudina y inward through the friction shell. The double or inner and outer .caps 24, 27 which close the opening inthe rear end of the friction shell, thus together revent' movement 1n both directions, the inner cap 27 preventing outward movement' under thrust Iof the lsmall or nested pring 13 which" bears gainst said .inner cap,

nesistin inward fpull of @he onnecting rod 28 which bears yagainstl.thef--outerV cap'.'

The'c'onnecting rudy-,28 has a h'ead 29 at one 'end which fits recess V30 of the 1 a friction ing. the rivets Whichconnect the stop mem- `5 bers-with 4the draft membersun blows, substantially as specified. y

and the outer caf.

-bearing at one face for der heavy 2.9511 a friction draft ri ging,.the combination with a draW-banraft yoke, sto members and followers, .of a friction she friction shoes, anti-'friction rollers and wedge wfithin the shell, sp ings reacting at one end gainst the friction shell an at their other end against the' friction shoes, said friction shell having at its rear end inner and 'outery caps, the v inner one .en.

prevent `outward movement, andthe outer 'cap engaging connectin rod extending between th'e wedge an said inner Land outer caps having opposite y l. beveled faces' for engagementv with alternately arranged and correspondingly bevshell with whichv el faces on the friction end, substantially as s ecified.

' J0 N F. OCONNOR. t

Oojlcs ot Vthis patent may be obwned'tor ivecente each, by addressing the #Commissioner at Patents.' Washington, Il). 03

the frictiomshell on the out side. to prevent inward movement, and a- 35 Vgaging the friction shell on the insidev to 4 the outervcz't`p, one of the springs lend against said inner ca 'sai friction sh ll isprovided at its. rear l 

